We are perplexed by his failure to answer the letter.

We were perplexed by his failure to answer the letter.

他何以不覆信,我们大惑不解.

This is the attitude that led to unravel a mystery that long puzzled Chinese historians.

正是这种态度使他解决了长期以来使中国历史学家们大惑不解的谜.

The effect of this decision is unclear.

这项裁决的效果尚不得而知.

But exact purpose remains unclear.

不过具体的目的依然不得而知.

Scientists do not know.

科学家们也不得而知.

Why she did this is not known.

她为何做这事不得而知.

The sequence of events the night of the murder still isn't known.

那个夜晚发生的谋杀事件前后经过现在还不得而知.

It is not clear where they find such numbers.

这一数字从何而来我们不得而知.

What would the surgeon be able to do for me?

这个治疗会给我带来什么不得而知.

Where the Nets go from there is still up in the air.

网队将去向何方仍不得而知.

It is too early to tell whether investigators will uncover serious wrongdoing.

调查人员是否会发现三星有严重违法行为现在还不得而知.

They are not assured of consistency from their bench.

他们球队的板凳是否能够保持稳定的发挥还不得而知.

His conduct is a problem to me.

他的行为使我莫名其妙.

She rose to fame out of nowhere.

她莫名其妙地就出名了.

Through her mind coursed all manner of confused thoughts after she read the letter.

她读完这封信后,千头万绪涌上心头.

As we drove, I tried to engage Christopher in conversation, but he was silent, apparently sorting through his feelings.

开车的路上, 我试着跟克里斯托弗聊天, 可他却缄默不语, 很显然他脑子里千头万绪,感情上一时还难以接受.

Thousands of strands loose ends, place in at the moment what is the most critical work?

千头万绪, 摆在眼前最紧要的工作是什么 呢 ?

Because of that, the job of enterprise thousands of strands and loose ends VIP goes doing.

因为这.因为那, 企业千头万绪的工作都要人去做.

Such moves technically comply with the code of conduct, but the EU is watching them warily.

此番举动在法律上的确符合行动守则的规定, 但欧盟仍将明察秋毫.

The trouble with the thesis is that It'strains at a gnat and swallows a camel.

这篇论文的毛病是明察秋毫而不见舆薪.